You're About to See an Incredibly Rare Cloud, and It's Proof the Climate Is Changing
Noctilucent clouds.
Photographer: Andrei Nekrassov/Getty ImagesThis article is for subscribers only.
In a few weeks, you may get to see evidence the atmosphere is changing -- if you’re lucky.
That’s when noctilucent clouds, the world’s highest, peak in number and show up in the night sky just after sunset as electric-blue swirls in the mesosphere, the coldest place on the planet.